Long-Period Displacement Spectra of Near-Fault Strong-Motion from Tremendous Earthquakes

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The characteristics of near-fault ground motion displacements, with the obvious directivity, were analyzed. Along moving direction of the fault, displacements take on the feature of fling-step, and the large pulse is the main characteristic of displacements in the vertical moving direction of the fault. The models of near-fault ground motion with different detailed scales can be obtained by median filtering with different window length on the velocity series. Displacement spectra of the models were compared with observations from tremendous earthquakes. The results show that the highly simplified model can predict the response spectrum in very long periods, but there are distinct errors in the period range in which engineering is interested (Tp 5 sec). The refined model is necessary for very large magnitude earthquakes which include multiple rupture, and should be established according to characteristics of velocity.

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Periodical:

Edited by:

Weijun Yang and Qiusheng Li

Pages:

2405-2409

Citation:

H. Li et al., "Long-Period Displacement Spectra of Near-Fault Strong-Motion from Tremendous Earthquakes", Applied Mechanics and Materials, Vols. 204-208, pp. 2405-2409, 2012

Online since:

October 2012

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$38.00

[1] Chunfeng Li and Yang Zhang: Seismological and Geomagnetic Observation and Research Vol. 27(2006), pp.1-8. (In Chinese).

[2] P. G. Somerville, N. F. Smith and R. W. Graves: Seismological Research Letters Vol. 68(1997), pp.199-222.

[3] E. Faccioli, R. Paolucci and J. Rey: Earthquake Spectra Vol. 20(2004), pp.347-376.

[4] W. D. Iwan, M. A. Moser and Chiayen Peng: Bulletin of the Seismological Society of America Vol. 75(1985), pp.1225-1246.

[5] D. M. Boore, C. D. Stephens and W. B. Joyner: Bulletin of the Seismological Society of America Vol. 92( 2002), pp.1543-1560.

[6] Heng Li, Dun Wang, Yongjian Cai, Jianchao Wu and Gang Liu: Advanced Materials Research Vol. 378-379( 2012), pp.247-250.

[7] S. K. Mitra and J. M. Kaiser: Handbook for Digital Signal Processing (Wiley, New York 1993).

[8] S. Kinoshita: Bulletin of the Seismological Society of America Vol. 98(2008), pp.1887-1897.